钢结构词汇

的广告在本站刊acceptable quality 合格质量acceptance lot 验收批量aciera 钢材admixture 外加剂against slip coefficient between friction surface of high-strength bolted connection高强度螺栓摩擦面抗滑移系数aggregate 骨料air content 含气量air-dried timber 气干材allowable ratio of height to sectional thickness of masonry wall or column砌体墙、柱容许高厚比allowable slenderness ratio of steel member 钢构件容许长细比allowable slenderness ratio of timber compression member 受压木构件容许长细比allowable stress range of fatigue 疲劳容许应力幅allowable ultimate tensile strain of reinforcement 钢筋拉应变限值allowable value of crack width 裂缝宽度容许值allowable value of deflection of structural member 构件挠度容许值allowable value of deflection of timber bending member 受弯木构件挠度容许值allowable value of deformation of steel member 钢构件变形容许值allowable value of deformation of structural member 构件变形容许值allowable value of drift angle of earthquake resistant structure抗震结构层间位移角限值amplified coefficient of eccentricity 偏心距增大系数anchorage 锚具anchorage length of steel bar 钢筋锚固长度approval analysis during construction stage 施工阶段验算arch 拱arch with tie rod 拉捍拱arch-shaped roof truss 拱形屋架area of shear plane 剪面面积area of transformed section 换算截面面积aseismic design 建筑抗震设计assembled monolithic concrete structure 装配整体式混凝土结构automatic welding 自动焊接auxiliary steel bar 架立钢筋Bbackfilling plate 垫板balanced depth of compression zone 界限受压区高度balanced eccentricity 界限偏心距bar splice 钢筋接头bark pocket 夹皮batten plate 缀板beam 次梁bearing plane of notch 齿承压面bearing plate 支承板bearing stiffener 支承加劲肋bent-up steel bar 弯起钢筋block 砌块block masonry 砌块砌体block masonry structure 砌块砌体结构blow hole 气孔board 板材bolt 螺栓bolted connection (钢结构螺栓连接bolted joint (木结构螺栓连接bolted steel structure 螺栓连接钢结构bonded prestressed concrete structure 有粘结预应力混凝土结构bow 顺弯brake member 制动构件breadth of wall between windows 窗间墙宽度brick masonry 砖砌体brick masonry column 砖砌体柱brick masonry structure 砖砌体结构brick masonry wall 砖砌体墙broad-leaved wood 阔叶树材building structural materials 建筑结构材料building structural unit 建筑结构单元building structure 建筑结构built-up steel column 格构式钢柱bundled tube structure 成束筒结构burn-through 烧穿butt connection 对接butt joint 对接butt weld 对接焊缝Ccalculating area of compression member 受压构件计算面积calculating overturning point 计算倾覆点calculation of load-carrying capacity of member 构件承载能力计算camber of structural member 结构构件起拱cantilever beam 挑梁cap of reinforced concrete column 钢筋混凝土柱帽carbonation of concrete 混凝土碳化cast-in-situ concrete slab column structure 现浇板柱结构cast-in-situ concrete structure 现浇混凝土结构cavitation 孔洞cavity wall 空斗墙cement 水泥cement content 水泥含量cement mortar 水泥砂浆characteriseic value of live load on floor or roof 楼面、屋面活荷载标准值characteristi cvalue o fwindload 风荷载标准值characteristic value of concrete compressive strength 混凝土轴心抗压强度标准值characteristic value of concrete tensile strength 混凝土轴心抗拉标准值characteristic value of cubic concrete compressive strength混凝土立方体抗压强度标准值characteristic value of earthquake action 地震作用标准值characteristic value of horizontal crane load 吊车水平荷载标准值characteristic value of masonry strength 砌体强度标准值characteristic value of permanent action 永久作用标准值characteristic value of snowload 雪荷载标准值characteristic value of strength of steel 钢材强度标准值characteristic value of strength of steel bar 钢筋强度标准值characteristic value of uniformly distributed live load 均布活标载标准值characteristic value of variable action 可变作用标准值characteristic value of vertical crane load 吊车竖向荷载标准值charaeteristic value of material strength 材料强度标准值checking section of log structural member，原木构件计算截面chimney 烟囱circular double-layer suspended cable 圆形双层悬索circular single-layer suspended cable 圆形单层悬索circumferential weld 环形焊缝classfication for earthquake-resistance of buildings 建筑结构抗震设防类别clear height 净高clincher 扒钉coefficient of equivalent bending moment of eccentrically loaded steel memher (beam-column 钢压弯构件等效弯矩系数cold bend inspection of steelbar 冷弯试验cold drawn bar 冷拉钢筋cold drawn wire 冷拉钢丝cold-formed thin-walled sectionsteel 冷弯薄壁型钢cold-formed thin-walled steel structure 冷弯薄壁型钢结构cold-rolled deformed bar 冷轧带肋钢筋column bracing 柱间支撑combination value of live load on floor or roof 楼面、屋面活荷载组合值compaction 密实度compliance control 合格控制composite brick masonry member 组合砖砌体构件composite floor system 组合楼盖composite floor with profiled steel sheet 压型钢板楼板composite mortar 混合砂浆composite roof truss 组合屋架compostle member 组合构件compound stirrup 复合箍筋compression member with large eccentricity 大偏心受压构件compression member with small eccentricity 小偏心受压构件compressive strength at an angle with slope of grain 斜纹承压强度compressive strength perpendicular to grain 横纹承压强度concentration of plastic deformation 塑性变形集中conceptual earthquake-resistant design 建筑抗震概念设计concrete 混凝土concrete column 混凝土柱concrete consistence 混凝土稠度concrete floded-plate structure 混凝土折板结构concrete foundation 混凝土基础concrete mix ratio 混凝土配合比concrete wall 混凝土墙concrete-filled steel tubular member 钢管混凝土构件conifer 针叶树材coniferous wood 针叶树材connecting plate 连接板connection 连接connections of steel structure 钢结构连接connections of timber structure 木结构连接consistency of mortar 砂浆稠度constant cross-section column 等截面柱construction and examination concentrated load 施工和检修集中荷载continuous weld 连续焊缝core area of section 截面核芯面积core tube supported structure 核心筒悬挂结构corrosion of steel bar 钢筋锈蚀coupled wall 连肢墙coupler 连接器coupling wall-beam 连梁coupling wall-column... 墙肢coursing degree of mortar 砂浆分层度cover plate 盖板covered electrode 焊条crack 裂缝crack resistance 抗裂度crack width 裂缝宽度crane girder 吊车梁crane load 吊车荷载creep of concrete 混凝土徐变crook 横弯cross beam 井字梁cup 翘弯curved support 弧形支座cylindrical brick arch 砖筒拱Ddecay 腐朽decay prevention of timber structure 木结构防腐defect in timber 木材缺陷deformation analysis 变形验算degree of gravity vertical for structure or structural member 结构构件垂直度degree of gravity vertical forwall surface 墙面垂直度degree of plainness for structural memer 构件平整度degree of plainness for wall surface 墙面平整度depth of compression zone 受压区高度depth of neutral axis 中和轴高度depth of notch 齿深design of building structures 建筑结构设计design value of earthquake-resistant strength of materials 材料抗震强度设计值design value of load-carrying capacity of members 构件承载能力设计值designations 0f steel 钢材牌号designvalue of material strength 材料强度设计值destructive test 破损试验detailing reintorcement 构造配筋detailing requirements 构造要求diamonding 菱形变形diaphragm 横隔板dimensional errors 尺寸偏差distribution factor of snow pressure 屋面积雪分布系数dogspike 扒钉double component concrete column 双肢柱dowelled joint 销连接down-stayed composite beam 下撑式组合粱ductile frame 延性框架dynamic design 动态设计Eearthquake-resistant design 抗震设计earthquake-resistant detailing requirements 抗震构造要求effective area of fillet weld 角焊缝有效面积effective depth of section 截面有效高度effective diameter of bolt or high-strength bolt 螺栓(或高强度螺栓有效直径effective height 计算高度effective length 计算长度effective length of fillet weld 角焊缝有效计算长度effective length of nail 钉有效长度effective span 计算跨度effective supporting length at end of beam 梁端有效支承长度effective thickness of fillet weld 角焊缝有效厚度elastic analysis scheme 弹性方案elastic foundation beam 弹性地基梁elastic foundation plate 弹性地基板elastically supported continuous girder 弹性支座连续梁elasticity modulus of materials 材料弹性模量elongation rate 伸长率embeded parts 预埋件enhanced coefficient of local bearing strength of materials 局部抗压强度提高系数entrapped air 含气量equilibrium moisture content 平衡含水率equivalent slenderness ratio 换算长细比equivalent uniformly distributed live load 等效均布活荷载etlectlve cross-section area of high-strength bolt 高强度螺栓的有效截面积ettectlve cross-section area of bolt 螺栓有效截面面积euler's critical load 欧拉临界力euler's critical stress 欧拉临界应力excessive penetration 塌陷Ffiber concrete 纤维混凝仁filler plate 填板门fillet weld 角焊缝final setting time 终凝时间finger joint 指接fired common brick 烧结普通砖fish eye 白点fish-belly beam 角腹式梁fissure 裂缝flexible connection 柔性连接flexural rigidity of section 截面弯曲刚度flexural stiffness of member 构件抗弯刚度floor plate 楼板floor system 楼盖four sides(edgessupported plate 四边支承板frame structure 框架结构frame tube structure 单框筒结构frame tube structure 框架-简体结构frame with sidesway 有侧移框架frame without sidesway 无侧移框架frange plate 翼缘板friction coefficient of masonry 砌体摩擦系数full degree of mortar at bed joint 砂浆饱满度function of acceptance 验收函数Ggang nail plate joint 钉板连接glue used for structural timberg 木结构用胶glued joint 胶合接头glued laminated timber 层板胶合木glued laminated timber structure 层板胶合结构grider 主梁grip 夹具grith weld 环形焊缝groove 坡口gusset plate 节点板Hhanger 吊环hanging steel bar 吊筋heartwood 心材heat tempering bar 热处理钢筋height variation factor of wind pressure 风压高度变化系数heliral weld 螺旋形僻缝high-strength bolt 高强度螺栓high-strength bolt with large hexagon bea 大六角头高强度螺栓high-strength bolted bearing type join 承压型高强度螺栓连接，high-strength bolted connection 高强度螺栓连接high-strength bolted friction-type joint 摩擦型高强度螺栓连接high-strength holted steel slsteel structure 高强螺栓连接钢结构hinge support 铰轴支座hinged connection 铰接hlngeless arch 无铰拱hollow brick 空心砖hollow ratio of masonry unit 块体空心率honeycomb 蜂窝hook 弯钩hoop 箍筋hot-rolled deformed bar 热轧带肋钢筋hot-rolled plain bar 热轧光圆钢筋hot-rolled section steel 热轧型钢hunched beam 加腋梁Iimpact toughness 冲击韧性impermeability 抗渗性inclined section 斜截面inclined stirrup 斜向箍筋incomplete penetration 未焊透incomplete tusion 未溶合incompletely filled groove 未焊满indented wire 刻痕钢丝influence coefficient for load-bearing capacity of compressionmember 受压构件承载能力影响系数influence coefficient for spacial action 空间性能影响系数initial control 初步控制insect prevention of timber structure 木结构防虫(oinspection for properties of glue used in structural member 结构用胶性能检验inspection for properties of masnory units 块体性能检验inspection for properties of mortar 砂浆性能检验inspection for properties of steelbar 钢筋性能检验integral prefabricated prestressed concrete slab-column structure整体预应力板柱结构intermediate stiffener 中间加劲肋intermittent weld 断续焊缝Jjoint of reinforcement 钢筋接头Kkey joint 键连接kinetic design 动态设计knot 节子(木节)Llaced of battened compression member 格构式钢柱lacing and batten elements 缀材(缀件)lacing bar 缀条lamellar tearing 层状撕裂lap connectlon 叠接(搭接)lapped length of steel bar 钢筋搭接长度large pannel concrete structure 混凝土大板结构large-form cocrete structure 大模板结构lateral bending 侧向弯曲lateral displacement stiffness of storey 楼层侧移刚度lateral displacement stiffness of structure 结构侧移刚度lateral force resistant wallstructure 抗侧力墙体结构leg size of fillet weld 角焊缝焊脚尺寸length of shear plane 剪面长度lift-slab structure 升板结构light weight aggregate concrete 轻骨料混凝土limit of acceptance 验收界限limitimg value for local dimension of masonry structure砌体结构局部尺寸限值limiting value for sectional dimension 截面尺寸限值limiting value for supporting length 支承长度限值limiting value for total height of masonry structure 砌体结构总高度限值linear expansion coeffcient 线膨胀系数lintel 过梁load bearing wall 承重墙load-carrying capacity per bolt 单个普通螺栓承载能力load-carrying capacity per high-strength holt 单个高强螺桂承载能力load-carrying capacity per rivet 单个铆钉承载能力log 原木log timberstructure 原木结构long term rigidity of member 构件长期刚度longitude horizontal bracing 纵向水平支撑longitudinal steel bar 纵向钢筋longitudinal stiffener 纵向加劲肋longitudinal weld 纵向焊缝losses of prestress 预应力损失lump material 块体Mmain axis 强轴main beam 主梁major axis 强轴manual welding 手工焊接manufacture control 生产控制map cracking 龟裂masonry 砌体masonry lintel 砖过梁masonry member 无筋砌体构件masonry units 块体masonry-concrete structure 砖混结构masonry-timber structure 砖木结构mechanical properties of materials 材料力学性能melt-thru 烧穿method of sampling 抽样方法minimum strength class of masonry 砌体材料最低强度等级minor axls 弱轴mix ratio of mortar 砂浆配合比mixing water 拌合水modified coefficient for allowable ratio of height to sectionalthickness of masonry wall 砌体墙容许高厚比修正系数modulus of elasticity of concrete 混凝土弹性模量modulus of elasticity parellel to grain 顺纹弹性模量moisture content 含水率moment modified factor 弯矩调幅系数monitor frame 天窗架mortar 砂浆multi-defence system of earthquake-resistant building 多道设防抗震建筑multi-tube supported suspended structure 多筒悬挂结构Nnailed joint 钉连接net height 净高net span 净跨度net water／cementratio 净水灰比non-destructive inspection of weld 焊缝无损检验non-destructive test 非破损检验non-load-bearingwall 非承重墙non-uniform cross-section beam 变截面粱non-uniformly distributed strain coefficient of longitudinal tensile reinforcement纵向受拉钢筋应变不均匀系数normal concrete 普通混凝土normal section 正截面notch and tooth joint 齿连接number of sampling 抽样数量Oobligue section 斜截面oblique-angle fillet weld 斜角角焊缝one-way reinforced(or prestressedconcrete slab 单向板open web roof truss 空腹屋架ordinary concrete 普通混凝土ordinary steel bar 普通钢筋orthogonal fillet weld 直角角焊缝outstanding width of flange 翼缘板外伸宽度outstanding width of stiffener 加劲肋外伸宽度over-all stability reduction coefficient of steel beam 钢梁整体稳定系数overlap 焊瘤overturning or slip resistance analysis 抗倾覆、滑移验算Ppadding plate 垫板partial penetrated butt weld 不焊透对接焊缝partition 非承重墙penetrated butt weld 透焊对接焊缝percentage of reinforcement 配筋率perforated brick 多孔砖pilastered wall 带壁柱墙pit 凹坑pith 髓心(oplain concrete structure 素混凝土结构plane hypothesis 平截面假定plane structure 平面结构plane trussed lattice grids 平面桁架系网架plank 板材plastic adaption coefficient of cross-section 截面塑性发展系数plastic design of steel structure 钢结构塑性设计plastic hinge 塑性铰plastlcity coefficient of reinforced concrete member in tensile zone受拉区混凝土塑性影响系数plate-like space frame 干板型网架plate-like space truss 平板型网架plug weld 塞焊缝plywood 胶合板plywood structure 胶合板结构pockmark 麻面polygonal top-chord roof truss 多边形屋架post-tensioned prestressed concrete structure 后张法预应力混凝土结构precast reinforced concrete member 预制混凝土构件prefabricated concrete structure 装配式混凝土结构presetting time 初凝时间prestressed concrete structure 预应力混凝土结构prestressed steel structure 预应力钢结构prestressed tendon 预应力筋pre-tensioned prestressed concrete structure 先张法预应力混凝土结构primary control 初步控制production control 生产控制properties of fresh concrete 可塑混凝土性能properties of hardened concrete 硬化混凝土性能property of building structural materials 建筑结构材料性能purlin 檩条Qqlue timber structurer 胶合木结构quality grade of structural timber 木材质量等级quality grade of weld 焊缝质量级别quality inspection of bolted connection 螺栓连接质量检验quality inspection of masonry 砌体质量检验quality inspection of riveted connection 铆钉连接质量检验quasi-permanent value of live load on floor or roof 楼面、屋面活荷载准永久值Rradial check 辐裂ratio of axial compressive force to axial compressive ultimate capacity of section 轴压比ratio of height to sectional thickness of wall or column 砌体墙柱高、厚比ratio of reinforcement 配筋率ratio of shear span to effective depth of section 剪跨比redistribution of internal force 内力重分布reducing coefficient of compressive strength in sloping grain for bolted connection 螺栓连接斜纹承压强度降低系数reducing coefficient of liveload 活荷载折减系数reducing coefficient of shearing strength for notch and tooth connection齿连接抗剪强度降低系数regular earthquake-resistant building 规则抗震建筑reinforced concrete deep beam 混凝土深梁reinforced concrete slender beam 混凝土浅梁reinforced concrete structure 钢筋混凝土结构reinforced masonry structure 配筋砌体结构reinforcement ratio 配筋率reinforcement ratio per unit volume 体积配筋率relaxation of prestressed tendon 预应筋松弛representative value of gravity load 重力荷载代表值resistance to abrasion 耐磨性resistance to freezing and thawing 抗冻融性resistance to water penetration 抗渗性reveal of reinforcement 露筋right-angle filletweld 直角角焊缝rigid analysis scheme 刚性方案rigid connection 刚接rigid transverse wall 刚性横墙rigid zone 刚域rigid-elastic analysis scheme 刚弹性方案rigidity of section 截面刚度rigidly supported continous girder 刚性支座连续梁ring beam 圈梁rivet 铆钉riveted connecction 铆钉连接riveted steel beam 铆接钢梁riveted steel girder 铆接钢梁riveted steel structure 铆接钢结构rolle rsupport 滚轴支座rolled steel beam 轧制型钢梁roof board 屋面板roof bracing system 屋架支撑系统roof girder 屋面梁roof plate 屋面板roof slab 屋面板roof system 屋盖roof truss 屋架rot 腐朽round wire 光圆钢丝Ssafety classes of building structures 建筑结构安全等级safetybolt 保险螺栓sapwood 边材sawn lumber+A610 方木sawn timber structure 方木结构saw-tooth joint failure 齿缝破坏scarf joint 斜搭接seamless steel pipe 无缝钢管seamless steel tube 无缝钢管second moment of area of tranformed section 换算截面惯性矩second order effect due to displacement 挠曲二阶效应secondary axis 弱轴secondary beam 次粱section modulus of transformed section 换算截面模量section steel 型钢semi-automatic welding 半自动焊接separated steel column 分离式钢柱setting time 凝结时间shake 环裂shaped steel 型钢shapefactorofwindload 风荷载体型系数shear plane 剪面shearing rigidity of section 截面剪变刚度shearing stiffness of member 构件抗剪刚度short stiffener 短加劲肋short term rigidity of member 构件短期刚度shrinkage 干缩shrinkage of concrete 混凝干收缩silos 贮仓skylight truss 天窗架slab 楼板slab-column structure 板柱结构slag inclusion 夹渣sloping grain 斜纹slump 坍落度snow reference pressure 基本雪压solid-web steel column 实腹式钢柱space structure 空间结构space suspended cable 悬索spacing of bars 钢筋间距spacing of rigid transverse wall 刚性横墙间距spacing of stirrup legs 箍筋肢距spacing of stirrups 箍筋间距specified concrete 特种混凝上spiral stirrup 螺旋箍筋spiral weld 螺旋形焊缝split ringjoint 裂环连接square pyramid space grids 四角锥体网架stability calculation 稳定计算stability reduction coefficient of axially loaded compression 轴心受压构件稳定系数stair 楼梯static analysis scheme of building 房屋静力汁算方案static design 房屋静力汁算方案statically determinate structure 静定结构statically indeterminate structure 超静定结构sted 钢材steel bar 钢筋steel column component 钢柱分肢steel columnbase 钢柱脚steel fiber reinforced concrete structure 钢纤维混凝土结构steel hanger 吊筋steel mesh reinforced brick masonry member 方格网配筋砖砌体构件steel pipe 钢管steel plate 钢板steel plateelement 钢板件steel strip 钢带steel support 钢支座steel tie 拉结钢筋steel tie bar for masonry 砌体拉结钢筋steel tube 钢管steel tubular structure 钢管结构steel wire 钢丝stepped column 阶形柱stiffener 加劲肋stiffness of structural member 构件刚度stiffness of transverse wall 横墙刚度stirrup 箍筋stone 石材stone masonry 石砌体stone masonry structure 石砌体结构storev height 层高straight-line joint failure 通缝破坏straightness of structural member 构件乎直度strand 钢绞线strength classes of masonry units 块体强度等级strength classes of mortar 砂浆强度等级strength classes of structural steel 钢材强度等级strength classes of structural timber 木材强度等级strength classes(grades of concrete 混凝土强度等级strength classes(grades of prestressed tendon 预应力筋强度等级strength classes(grades of steel bar 普通钢筋强度等级strength of structural timber parallel to grain 木材顺纹强度strongaxis 强轴structural system composed of bar 杆系结构structural system composed of plate 板系结构structural wall 结构墙superposed reinforced concrete flexural member 叠合式混凝土受弯构件suspended crossed cable net 双向正交索网结构suspended structure 悬挂结构swirl grain 涡纹Ttensile(compressive rigidity of section 截面拉伸(压缩刚度tensile(compressive stiffness of member 构件抗拉(抗压刚度tensile(ultimate strength of steel 钢材(钢筋抗拉(极限强度test for properties of concrete structural members 构件性能检验thickness of concrete cover 混凝土保护层厚度thickness of mortarat bed joint 水平灰缝厚度thin shell 薄壳three hinged arch 三铰拱tie bar 拉结钢筋tie beam 系梁tie tod 系杆tied framework 绑扎骨架timber 木材timber roof truss 木屋架tor-shear type high-strength bolt 扭剪型高强度螺栓torsional rigidity of section 截面扭转刚度torsional stiffness of member 构件抗扭刚度total breadth of structure 结构总宽度total height of structure 结构总高度total length of structure 结构总长度transmission length of prestress 预应力传递长度transverse horizontal bracing 横向水平支撑transverse stiffener 横向加劲肋transverse weld 横向焊缝transversely distributed steelbar 横向分布钢筋trapezoid roof truss 梯形屋架triangular pyramid space grids 三角锥体网架triangular roof truss 三角形屋架trussed arch 椽架trussed rafter 桁架拱tube in tube structure 筒中筒结构tube structure 简体结构twist 扭弯two hinged arch 双铰拱two sides(edges supported plate 两边支承板two-way reinforced (or prestressed concrete slab 混凝土双向板Uultimate compressive strain of concrete 混凝土极限压应变unbonded prestressed concrete structure 无粘结预应力混凝土结构undercut 咬边uniform cross-section beam 等截面粱unseasoned timber 湿材upper flexible and lower rigid complex multistorey building 上柔下刚多层房屋upper rigid lower flexible complex multistorey building 上刚下柔多层房屋Vvalue of decompression prestress 预应力筋消压预应力值value of effective prestress 预应筋有效预应力值verification of serviceability limit states 正常使用极限状态验证verification of ultimate limit states 承载能极限状态验证vertical bracing 竖向支撑vierendal roof truss 空腹屋架visual examination of structural member 构件外观检查visual examination of structural steel member 钢构件外观检查visual examination of weld 焊缝外观检查Wwall beam 墙梁wall frame 壁式框架(门wall-slab structure 墙板结构warping 翘曲warping rigidity of section 截面翘曲刚度water retentivity of mortar 砂浆保水性water tower 水塔water／cement ratio 水灰比weak axis 弱轴weak region of earthquake-resistant building 抗震建筑薄弱部位web plate 腹板weld 焊缝weld crack 焊接裂纹weld defects 焊接缺陷weld roof 焊根weld toe 焊趾weldability of steel bar 钢筋可焊性welded framework 焊接骨架welded steel beam 焊接钢梁welded steel girder 焊接钢梁welded steel pipe 焊接钢管welded steel strueture 焊接钢结构welding connection 焊缝连接welding flux 焊剂welding rod 焊条welding wire 焊丝wind fluttering factor 风振系数wind reference pressure 基本风压wind-resistant column 抗风柱wood roof decking 屋面木基层Yyield strength (yield point of steel 钢材(钢筋屈服强度(屈服点。